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  1. R

    M1078 Hydraulic Controller Box and System Schematics

    Yep, send me a message and we can work out the details.
  2. R

    M1078 Hydraulic Controller Box and System Schematics

    I don’t do sarcasm, I am a very literal person. I am removing all my mid structure and am replacing all the hydraulic control with a hand pump. I literally need to use it to lower the spare tire one last time then I am done with the valve…
  3. R

    M1078 Hydraulic Controller Box and System Schematics

    Sure I am nearly done with mine, just need to lower the spare one last time…
  4. R

    M1078 Hydraulic Controller Box and System Schematics

    It should provide for a return path to the reservoirs but there is some steering check valves in there to insure it goes to the right reservoir with the priority insuring the sealed hand pump reservoir is full then if it gets 5psi of back pressure on that path, it opens a check to allow flow up...
  5. R

    M1078 Hydraulic Controller Box and System Schematics

    And of course the tie breaker for the decision as to which valve has the issue would be to select cab suspension and see if you can move those cylinders. each suspension cylinder has 2 locking pins that must be removed before you can extend them. There were to keep them from leaking down and...
  6. R

    M1078 Hydraulic Controller Box and System Schematics

    Chapter 19, which you will find in the 20-4 manual. 19-4 manifold valve replace, has complete exploded views and disassembly instructions for all the valve assemblies…
  7. R

    M1078 Hydraulic Controller Box and System Schematics

    Re-reading your description again, it sounds like it is probably the 3way selector valve as both pumps sound like they are deadheaded/blocked… Since they are rotating spools and not sliding spools, if they are not properly seated, or loose(can,move in or out) you might be able to rotate them to...
  8. R

    M1078 Hydraulic Controller Box and System Schematics

    There are 2 different control valve models and they have the filters in slightly different positions, but they are under hex caps as Superman described. Have you downloaded the manuals from here? There is a section in one of them on accessing filters and orifices(sorry, forget which) For both...
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